CNCYEAH Linear Guide Kit, 2 Pieces HGR20-800 mm Rail + 1 Piece Ball Screw SFU1605-800 mm, BF12/BK12 Support, DSG16H, Coupling, with 4 Sliding Block for 3D Printer CNC Machine

High-quality material: ball screw are made of carbon steel, linear guides made of GCr15 bearing steel with aluminium alloy housing. Surface chrome plating has rust protection. The hardness can be as high as HRC62, more durable. High precision: the motor-driven guide rail achieves high-precision linear movement. Wear-resistant and low noise. Precise thread design, runs smoothly and stably, prolongs the life of the ball screw. Easy installation: linear steel guide rail with pre-drilled holes for easy installation. Stainless steel linear rail for linear movement. Easy to install, maintenance free. Wide application: grinding machine, milling machines, lathes, drills and comprehensive processing machines, discharge manufacturing machine, drill, line cutting machine, precision gauge, woodworking machine, loader and shipping device. 800 mm HGR20 linear rail: this linear guide set contains 2 pieces rail shafts and 4 bearing cushion blocks, 1 piece ball screw (with end machined) + 1 set BK/BF12 nut + 1 ball nut housing + 1 coupling.